EBL 9V Lithium-ion Battery Charger for Li-ion 9V Rechargeable Batteries, 8 Bay Smart Charger Durable premium ABS plastic with good heat dissipation, 8 Slots for charging. Smart individual charger for 9V Lithium-ion Rechargeable Batteries, 1 to 8 battery supported. Using CCCV charging method. Prevent from over-voltage, over-current and reverse connection. Unique negative delta V (- V) cut-off function, MCU Controlled, double protective and more safe. LED state the charging status: Red -- Charging ; Green -- Fully Charged.